Traditionally buckling analyses in engine structures have been performed using analytical solutions from validated bibliographical reference (e.g. Bruhn). This method requires a certain margin of safety due to the idealization of the real complex geometries into the more simple validated set of cases.

As computational power increased, linear Euler buckling based on finite element solutions has become accessible. This second approach also requires of a certain margin of safety due to not considering material and geometrical non-linear effects.

This paper presents the development of an accurate non-linear finite element prediction of the buckling characteristics of a rear engine mount support structure. The method includes both material and geometrical non-linearity.

This analytical prediction method has been validated by a series of material coupon and sub-component compressive experimental rig tests.

The work presented in this paper will be completed in the future with validation from a full component test and with a method to account for manufacturing tolerances.

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